Contents
What are the maximum and minimum number of tuples in natural join?
So the best answer is 0 minimum and 8 maximum.
What is the total number of tuples?
Suppose you are given relations r(A, B) and s(A, C). Suppose that r has 10000 tuples, and s has 5000 tuples. Suppose attribute r.A has 1001 distinct values, and s.A also has 1001 distinct values….GO Book for GATECSE 2022.
| tags | tag:apple |
|---|---|
| answers | answers:2 |
| is accepted | isaccepted:true |
| is closed | isclosed:true |
How many tuples in a join?
Join is a combination of a Cartesian product followed by a selection process. A Join operation pairs two tuples from different relations, if and only if a given join condition is satisfied. We will briefly describe various join types in the following sections.
How many tuples in full outer join?
Full Outer Join(⟗): When applying join on two relations R and S, some tuples of R or S does not appear in result set which does not satisfy the join conditions. But Full Outer Joins gives all tuples of S and all tuples of R in the result set.
Can a relation have zero tuples?
Since each tuple in a relation must be unique, no two tuples can have exactly the same values for every one of their attributes, that is, there can be no duplicate tuples in a relation.
What are tuples and domain in relational model?
Relational model can represent as a table with columns and rows. Each row is known as a tuple. Each table of the column has a name or attribute. Domain: It contains a set of atomic values that an attribute can take. Attribute: It contains the name of a column in a particular table.
What’s the maximum number of tuples in a student table?
Because Rollno is key in Student table and rollno,courseno are compound key . Relationships between Student and enrol table is 1:M . So maximum number of tuples is same as many side ie. 8 And minimum number of tuples is 8 if Foreign key exist other wise 0. So answer is 8,8 .
Are there maximum and minimum k elements in tuple?
Sometimes, while dealing with tuples, we can have problem in which we need to extract only extreme K elements, i.e maximum and minimum K elements in Tuple. This problem can have applications across domains such as web development and Data Science. Let’s discuss certain ways in which this problem can be solved.
How many tuples are there in natural join?
When we take natural join, the value of common attribute (B in this case) should match. values 1 to 100 of R is matched with corresponding 1 to 100 in S. So it will have 100 tuples.
Which is the minimum number of tuples in relational algebra?
Wrong, the minimum is n (the greatest of the two sizes, m and n). When all the tuples of R also exist in S. And m and n cannot be null, they are the sizes of the relations, they are numbers (integers). 2. R INTERSECTION S Correct but the reasoning is wrong. You compare tuples of the two relations, not keys. Correct but the reasoning is wrong.